The blood cholesterol levels of men aged 55 to 64 are approximately normally distributed with mean 222 mg/dl and standard deviation 37 mg/dl.
We can estimate that 10% percent of the men aged 55 to 64 have cholesterol level mg/dl or higher. (round to an integer)

It is provided that 10% of the men aged 55 to 64 have cholesterol level 270 mg/dl or higher.

Step-by-step explanation:

Let X = blood cholesterol levels of men aged 55 to 64 years.

The random variable X follows a Normal distribution with mean μ = 222 mg/dl and standard deviation σ = 37 mg/dl.

It is provided that 10% of the men aged 55 to 64 have cholesterol level x mg/dl or higher.

Compute the value of x as follows:

Use the z-table to compute the value z for the probability 0.90.

The value of z is 1.29.

Compute the value of x as follows:

Thus, 10% of the men aged 55 to 64 have cholesterol level 270 mg/dl or higher.

wholesale price is the initial price before markup. retail price comes after the markup.

a price of 8 bucks that's marked up by 100%   is

formula: initial price + (percent markup in fraction/decimal)(initial price)

8+(1)(8)

8+8

16

retail price is $16.